Is there a mySQL error log? Navicat access problem.

[UpAllNight]

Are mySQL errors logged somewhere? I need to check for a problem that has just started happening:

I'm using Navicat to do remote maintenance dbs dbs running on my DA server. For the last 2 days I have not been able to look at custom views in Navicat. I can still log in but when trying to look at a custom view that had been working fine, I now get a:

1045 - Access denied for user 'username'@'000.000.000.000'(using password: YES).

This is happening on all sites, not just one.

I was hoping to be able to look in a log to maybe get an idea of what kind of error was causing this.

Thanks,
David

 

[scsi]

There is not a log unless you specify one in my.cnf or the command line.